Ventilator or chimney-cap



(NoM odelJ G. FRANZ SE B. T. MERRILL.

VENTILATOR 0R CHIMNEY GAP.

No. 530,036. Patented Nov. 27, 1894.

WITNESSES IJVV'EAZBRS; W m M .dttorney UNITED STATES PATENT OFFICE.

CHARLES FRANZ AND ROBERT T. MERRILL, OF BELOIT, WISCONSIN.

VENTILATOR OR CHIMNEY-CAP.

SPECIFICATION forming part of Letters Patent No. 5230,036, datedNovember 27, 1 894.

Application filed June 27, 1894. Serial No. 515,237. (No model.)

Toall whom it may concern: the bottom walls of which are secured to theBe it known that we, CHARLES FRANZ and cone 0, in this manner forming aseries ROBERT T. MERRILL, citizens of the United of radial and upwardlydirected passages d States, and residents fBeloit,in thecountyof all ofwhich lead out of the upper portion 5 Rock, and State of Wisconsin, haveinvented of the interior chamber formed by said cone 55 certain new anduseful Improvements in Venand cap. The openings between the ribs 0tilators or Chimney-Caps; and we do declare form a second series ofradial and upward the following to be a full, clear, and exactdepassages which lead from the interior chamscription of the invention,such as will enable her just below the upper passages. The cap to othersskilled in the art to which it appertains D is made sufficiently largeto come 'well 60 to make and use the same, reference being down on thecone 0. The arrangement of had to the accompanying drawings, and toletthe cap, deflectors and passages is such, it ters of reference markedthereon, which form will be readily seen, as to efiectually prevent apart of this specification. the wind or weather from entering the stack.Figure 1 of the drawings is arepresentation A current of air strikingthe cap from any 65 of an elevation of the invention applied. Fig.direction creates a partial vacuum in the up- 2 is a section on linea:ac, Fig. 1 enlarged. per portion of the stack, thus insuring a Thisinvention has relation to certain new strong up draft at all times. anduseful improvements in chimney caps Having described our invention, whatwe and ventilators, our object being to providea claim as new, anddesire to secure by Letters 70 cap or ventilator for chimneys and draftpipes, Patent, is-- which is simple in contruction, and which ef- 1. Achimney cap or ventilator comprising fectually prevents the wind andweather from a lower cone deflector having an opening entering thechimney or pipe, and thus maintherein, a series of radial ribs supportedtains a perfect up draftin all kinds of weather. upon said deflector, anupper and larger cone 75 With this object in View, the inventionsupported on said ribs, the spaces between consists in the novelconstruction and coinsaid ribs forming a series of radial and upbinationof parts, all as hereinafter described Ward passages, an opening in thetruncated and pointed out in the appended claims. apex of said uppercone, and a cap covering Referring to the accompanying drawings saidopening and formed into a series of ra- 8o the letter A designates adraft tube or pipe dial ridges and depressions, forming a series uponthe upper end portion of which the cap of air passages, substantially asspecified. or ventilator is supported, by means of a col- 2. Thecombination with the draft tube or lar a fitting thereon. Attached tosaid collar pipe A, of the collar supported on the upper a. is adeflector B, which consists of a metalend of said tube or pipe, thelower truncated 85 1 lie plate in the form of a frustum of a cone, coneB, the radial ribs supported on said and having a central openingcorresponding cone, the upper truncated cone supported on to the openingin the tube or pipe A. Snpsaid ribs, upward and radial passages beported upon the outer surface of this detween said ribs, the cap overthe opening in flector, are a series of edgewise disposed rathe uppercone and bent to form a series of 0 dial ribs 0 upon which is supporteda second, angular radial ridges, forming air passages, and largerdeflector cone 0, also slightly trunsubstantially as specified. catedand formed with an opening b. This In testimonywhereof weaffixoursignatnres cone 0 is sufficiently large to cause its lower inpresence of two witnesses. 5 marginal portion to overhang the edge ofthe CHAS FRANZ deflector a RoB'r T MERRILL Over the opening I) is placeda cap piece D which vis bent or corrugated to form a series Witnesses:of angular, symmetrical, and radial ridges J. B. DOW, d separated bycorresponding depressions e D. H. FOSTER.

